Le Roy, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Le Roy, a city in Decatur County, Iowa.
Today
87°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Partly sunny. High near 87, with temperatures falling to around 85 in the afternoon. West wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Le Roy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 7 mph W | 26% |
| Tonight | 64°F | Showers And Thunderstorms | 9 mph NNE | 76% |
| Wednesday | 74°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 8 mph NE | 74% |
| Wednesday Night | 59°F | Showers And Thunderstorms Likely | 3 to 9 mph NE | 55% |
| Thursday | 81°F | Chance Showers And Thunderstorms then Mostly Sunny | 3 mph ENE | 30% |
| Thursday Night | 62°F | Mostly Clear | 3 mph ESE | 4% |
| Friday | 85°F | Sunny | 6 mph S | 6% |
| Friday Night | 66°F | Mostly Clear | 6 mph S | 14% |
| Saturday | 89°F | Sunny | 6 to 12 mph SSW | 5% |
| Saturday Night | 71°F | Mostly Clear | 14 mph SSW | 9% |
| Sunday | 91°F | Sunny | 15 mph SSW | 9% |
| Sunday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 12 to 15 mph S | 19% |
| Monday | 91°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 13 to 17 mph SSW | 19% |
| Monday Night | 72°F | Chance Showers And Thunderstorms | 13 to 16 mph S | 26% |
Forecast source: National Weather Service (api.weather.gov) for Le Roy (40.878, -93.593). Updated through the day.
Growing snapshot for Le Roy
Last spring frost
Apr 30
First fall frost
Oct 8
Growing season
161 days
Hardiness zone
5b
More local growing data for Le Roy: nearby ZIP 50103 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Leon 6 Ese, Ia (5.2 mi from Le Roy). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.